Settings

This is a visual aid designed to be projected onto a whiteboard for whole
class exposition. It doesn't need to be an interactive whiteboard though of
course that will make the resource more dynamic. The title "Shine+Write"
suggests that the teacher or student can write on the whiteboard to enhance this
visual aid.

The Transum Pin Board provides many ways to investigate two dimensional shapes. Clicking on the dots allows students or teachers to create shapes accurately, quickly and in a number of different colours.
Use a screen clipping tool to capture the shapes you create for pasting into
notes or alternatively copy the shapes onto square spotty paper.

How did you use this resource?
Can you suggest
how teachers could present or develop this resource?

"How many different triangles can be constructed on the grid with 3 rows and 3 columns? How about 4 sided shapes? 5 sided?"

Transum,
Wednesday, April 18, 2012

"Use the settings page to select a grid of 20 columns. How many different quadrilaterals can be drawn on this grid? Change colour to begin a new quadrilateral."

Transum,
Wednesday, April 18, 2012

"How many shapes can be constructed with an area of two square units?"

Transum,
Wednesday, April 18, 2012

"How many different triangle can be constructed with just one pin inside?"

Transum,
Wednesday, April 18, 2012

"Here's a challenge to 'Pick' at! Given a simple polygon constructed on the grid above, Pick's theorem provides a simple formula for calculating the area of this polygon in terms of the number I of lattice points in the interior located in the polygon and the number b of lattice points on the boundary placed on the polygon's perimeter. Can you figure out the formula?"

Transum,
Wednesday, April 18, 2012

"The following puzzle comes from the excellent Mr Barton's podcasts and was suggested by Will Emeny.

These two rectangles have an area of 10 square units.

In total, there are five different rectangles with vertices on grid points that have an area of 10 square units. Draw all five.

Prove there can be no more than five.

Draw all the rectangles that have an area of 12 square units. How do you know you've got them all?"

Transum,
Thursday, September 8, 2016

Do you have any comments? It is always useful to receive
feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world.
Click here to enter your comments.

Teacher, do your students have
access to computers?Do they have iPads or Laptops in Lessons?

Whether your students each have a TabletPC, a Surface or a Mac,
this activity lends itself to eLearning (Engaged Learning).